Reinforcement of hydroxypropylcellulose films by cellulose nanocrystals in the presence of surfactants

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• 作者：Noor Rehman ; Maria Inez G. de Miranda…
• 关键词：Hydroxypropylcellulose ; Cellulose nanocrystals ; Bionanocomposites ; Maize straw ; Micellization
• 刊名：Chinese Journal of Polymer Science
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：34
• 期：11
• 页码：1301-1310
• 全文大小：1,265 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Condensed Matter Physics
  Industrial Chemistry and Chemical Engineering
  Polymer Sciences
  Characterization and Evaluation of Materials
  
• 出版者：Chinese Chemical Society and Institute of Chemistry, CAS, co-published with Springer
• ISSN：1439-6203
• 卷排序：34

文摘

Hydroxypropylcellulose (HPC) films were prepared by casting with cellulose nanocrystals in the presence of anionic surfactant sodium dodecylsulphate (SDS) and cationic surfactant hexadecyltrimethyl ammonium bromide (CTAB). The cellulose nanocrystals were isolated from maize straw, a biomass source produced in huge quantities as an agrowaste in Brazil. These bionanocomposite films had good transparency and their surface hydrophilic character was evidenced by static contact angle measurements. Thermogravimetry (TGA) measurement revealed that nanocrystals and surfactants changed the thermal stability of the HPC films. Dynamic mechanical analysis (DMA) showed that the tensile storage and loss moduli of the HPC films increased by increasing the contents of cellulose nanocrystals and surfactants, especially in the case of CTAB. This good reinforcing effect of HPC matrix can be explained as due to electrostatic attractive interactions brought about by the presence of CTAB and the nanocrystals.